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Upper oesophageal gastric heterotopia: a prospective necropsy study in children
Insights
Gastric heterotopia, an abnormal presence of stomach tissue in the esophagus, was found in 21% of pediatric autopsy cases. Its incidence decreased with age and was linked to unexplained infant deaths.
Area of Science:
- Pediatric Pathology
- Gastrointestinal Histology
Background:
- Gastric heterotopia is the presence of gastric tissue in the esophagus.
- Previous incidence data in pediatric populations is limited.
Purpose of the Study:
- To determine the incidence and location of gastric heterotopia in pediatric esophagi.
- To explore associations between gastric heterotopia and age, cause of death, and other factors.
Main Methods:
- Prospective examination of 300 pediatric esophageal specimens (0-14 years) from necropsies.
- Histological analysis to identify gastric heterotopia.
- Correlation of findings with age, congenital malformations, and cause of death.
Main Results:
- Gastric heterotopia was identified in 63 (21%) of the specimens.
- Incidence was higher than previously reported, decreasing with age (excluding perinatal deaths).
- Heterotopia was located in the subcricoid region, often near lymphoid tissue, and not associated with congenital malformations.
Conclusions:
- Pediatric gastric heterotopia has a higher incidence than previously recognized.
- The inverse relationship with age suggests potential developmental or environmental factors.
- Association with unexplained deaths warrants further investigation.
Abstract:
Three hundred specimens of oesophagus obtained at necropsy from infants and children aged from 0 to 14 years, dying from a variety of causes, were examined prospectively for evidence of gastric heterotopia. Gastric heterotopia was observed in 63 (21%) of the whole series, representing a much higher incidence than reported previously. Excluding deaths in the perinatal period, the incidence appeared to be inversely related to age. Heterotopia was restricted to the subcricoid level of the oesophagus and often showed a close association with lymphoid tissue. There was no association with congenital malformation, and heterotopia occurred more commonly in those infants whose deaths were unexplained, although the reason for this association was unclear.